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Beverage Cans
Printing
Machinery
▎Product Overview
Made from three pieces of metal (tinplate, TFS, etc.) - body, bottom, and end. The body is typically printed flat before being rolled and welded. Therefore, printing is done on flat sheets. First, rubber blankets for 3-piece can printing are designed with excellent dimensional stability. Since metal sheets are rigid and non-absorbent, the blanket must maintain uniform thickness under high pressure to guarantee even ink transfer across the entire flat sheet. A multi-layer construction is typically adopted, consisting of a compressible layer, reinforcing fabric plies, and a durable printing surface. The compressible layer helps absorb minor variations in metal sheet thickness and surface irregularities, ensuring smooth contact and reducing vibration during high-speed operation.
Second, superior surface resilience and solvent resistance are essential. Metal decorating inks often contain aggressive solvents, so the rubber compound must resist swelling, cracking, and degradation. The surface also requires high abrasion resistance because tinplate sheets can be sharp and may cause mechanical wear.
Finally, precise hardness and elasticity are critical to achieving sharp dot reproduction and consistent color density. The structural integrity of the blanket directly affects registration accuracy, print clarity, and overall production efficiency in 3-piece can manufacturing.
▎Printing Characteristics
| Multi-color printing directly onto flat metal sheets. | Extremely high demands for registration accuracy and dot reproduction, especially for color graphics and fine lines. | Needs to pass over the weld seam area; blankets must accommodate minor surface irregularities. | Requires excellent chemical resistance (against cleaners, solvents, UV varnishes, etc.) and long run life. |
| When it comes to rubber blankets for 3-pcs can, printing is performed directly on flat tinplate or TFS sheets before the sheet is formed into a cylindrical body. Multi-color flat metal printing requires blankets engineered for precision, stability, and consistent ink transfer across large sheet formats. | High-precision registration capability directly impacts the visual quality and brand value of finished 3-piece cans. Even minor stretching, compression, or vibration in the rubber blanket can lead to color misalignment or blurred details. H&Z rubber blanket can exhibit exceptional dimensional stability under repeated compression cycles. | In certain processes such as reprinting or over-varnishing, the blanket may need to pass over welded seam areas that create subtle height differences. Rubber blankets for 3-piece cans should be engineered with an advanced compressible layer capable of absorbing localized pressure spikes. This prevents excessive impact on the printing plate and reduces the risk of image distortion near irregular areas. | High abrasion resistance and structural durability are critical to extending service life and reducing downtime. Rubber blankets should be able to demonstrate outstanding resistance to swelling, hardening, cracking, or surface degradation when exposed to these substances. Ultimately, superior chemical resistance combined with mechanical durability, which ensures H&Z rubber blankets with stable performance, consistent print quality, and cost-effective operation in demanding 3-piece can manufacturing environments. |
▎Recommended Blanket Types
Hard Blankets: The most common choice for three-piece can printing.
| Medium (Standard) Blankets: Also a common choice, offering good balance.
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▎Application Scope
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Tinplate Milk Powder Cans |
Tea Cans |
Paint Buckets |
Protein Powder Cans |
▎For Varied Needs
H&Z provides comprehensive product customization services designed to meet the diverse and evolving needs of the metal packaging industry.
Our custom three-piece can rubber blankets services begin with in-depth technical consultation, covering material selection for coated steel and aluminum sheets, surface treatment specifications, and performance requirements based on the client’s specific application.
Whether customers require specialized coatings, tailored ink systems, high-performance rubber blankets, or precision offset printing plates, H&Z ensures each component is optimized for compatibility and production efficiency.